<!-- 定义导航栏 -->
<nav class="navbar navbar-expand-lg navbar-light bg-light fixed-top">
    <div class="container">
        <!-- 导航栏商标 -->
        <a class="navbar-brand" href="/">电视猪极简考试</a>
        <!-- 导航入口 -->
        <div>
            <ul class="navbar-nav">
                <li class="nav-item">
                    <a class="nav-link" href="/">主页</a>
                </li>
            </ul>
        </div>
    </div>
</nav>


